package io.github.dunwu.javacore.jdk8.lambda;

import java.util.*;

/**
 * @author Benjamin Winterberg
 */
public class Lambda1 {

	public static void main(String[] args) {
		List<String> names = Arrays.asList("peter", "anna", "mike", "xenia");

		Collections.sort(names, new Comparator<String>() {
			@Override
			public int compare(String a, String b) {
				return b.compareTo(a);
			}
		});

		Collections.sort(names, (String a, String b) -> {
			return b.compareTo(a);
		});

		Collections.sort(names, (String a, String b) -> b.compareTo(a));

		Collections.sort(names, (a, b) -> b.compareTo(a));

		System.out.println(names);

		names.sort(Collections.reverseOrder());

		System.out.println(names);

		List<String> names2 = Arrays.asList("peter", null, "anna", "mike", "xenia");
		names2.sort(Comparator.nullsLast(String::compareTo));
		System.out.println(names2);

		List<String> names3 = null;

		Optional.ofNullable(names3).ifPresent(list -> list.sort(Comparator.naturalOrder()));

		System.out.println(names3);
	}

}
